Telephone substation apparatus



Jul 16, 1935.

D.- H. v KING TELEPHONE SUBSTATION APPARATUS Filed Oct. 20, 1932 5 Sheets-Sheet l INVENTOR D. H. KING A T TORNE Y July 16,1935. D, H, KING 2,008,283

TELEPHONE SUBSTATION APPARATUS Filed OCt- 20, 1932 3 Sheets-Sheet 2 Maui v6. 7M

ATTORNEY July 16, 1935) D. H. KING TELEPHONE SUBSTATION APPARATUS 3 SheetsSheet 3 Filed Oct. 20, 1952 .G .r R E m m N m H T W Patented July '16, 1935 A UINITEDYSTAATES TELEPHONE SUBSTATION APPARATUS Douglas H. King, Irvington,

N. J., assignor to Bell TelephoneLaboratories, Incorporated, New 7 llorlr, N. '31., a corporation of N ew' York Application center 20, 1932, SerialNo. 638,666

g r 2 Claims. (Cl. 179-459) This invention relates'to telephone substation apparatus and more particularly to desk-stands for hand telephones.

An object of this invention is to simplify the structure and to reduce the manufacturing cost of substation telephone apparatus.

A feature of this invention relates to an. inn proved circuit controlling means or switching mechanism in a desk stand for hand telephones.

Another feature of this invention relates to an improved construction and assembly of a desk stand for a hand telephone, in which all of the parts are easily accessible and may be readily assembled, repaired or replaced.

The desk stand of this invention comprises a casing or housing including a hollow pedestal and a recessed cradle portion integral with the pedestal. The pedestal is provided with an apertured flange extending inwardly adjacent the cradle portion and supporting a centrally apertured closure member positioned within the recessed cradle portion. A plunger extends through the closure member and flange and is adapted to he reciprocated by a hand telephone placed injor removed from the cradle portion. A bracket member having parallel flanges is secured to the flange on the pedestal and carries a set of-springs certain of which cooperate with the plunger to restore it to normal position and; others of which serve to control a circuit to which the desk stand may be connected. A rocker member is supported between the parallel fianges on th bracket member and is provided with a plurality of extensions or arms. One of the extensions or arms engages one of the springs of the set and another of the extensions or arms is engaged by the plunger.

A base supporting the usual substation apparatus such as a ringer, a condenser and an induction coil, is hinged to the pedestal.

The invention will be understood more clearly and fully from the following detailed description with reference to the accompanying drawings in which: j

Fig. 1 is a side elevational view of a telephone desk stand illustrating one embodiment of the invention partly broken away and partly in cross section and with the base swung down to show details of assembly more clearly.

Fig. 2 is a cross-sectional view along line 2-2 of Fig. 1.

Fig. 3 is an enlarged plan view showing the substation apparatus on the base of the desk stand shown in Fig. 1.

Fig. 4 is an enlarged exploded view in perspective of the switch. and contact assembly ofethe desk stand shown in Fig. 1. 7

- Referring now to the drawings, a telephone desk stand illustrative of one-embodiment of this invention comprises a casing including a base por- 5 tion ill, a-pedestal H, and a plurality of tines l2 arising from the pedestal and forming a cradle for receiving the handle of a hand telephone (not shown). The casing may be of metal or of an insulating material such as a phenolic condensa- 10 ticn product, and, as will'be seen from Figs. 1 and 2, is designed with all of its outer surfaces taperingin the same direction so that the casing may be cast or molded in a single piece. The pedestal i l is provided with a centrally apertured flange i3 which may be formed integrally with the casing and which-has a plurality of metallic inserts l4 embedded therein. A unitary assembly comprising a'bracket shown in Fig. 4 and generallydesignated as 15, rocker 23, and aset of spr ngs comprising springs I9 and 89 is mounted within the casing on the inner side of the flange it by means of screws l7 extendingthrough arms it of the member l5 into inserts M. The bracket is provided with a downwardly extending arm I8 on which the springs 89 and I9 are mounted and a pair of parallelhanger arms 26 extending from its ends which are provided with aligned apertures 2| forreceiving a rod or axle 22. The rocker member 23 comprises a single piece metallic stamping having parallel extensions 24 which are disposed adjacent the arms 26 and are provided with aligned apertures 25 through which the rod of axle 22 extends. The rocker 23 isalso' provided with a downwardly projecting extension 28 having an insulating button 27 thereon adapted to engage the end of the spring 89. The stamping 23 is provided further with an extending tongue 28 which is disposed below the central aperture inthe flange l3, as shown in Figs. 1 and 0 2. When the handset is placed on the cradle, the i spindle 35 is moved downwardly, causing the extension 36 thereon to engage the tongue 28 and to rotate the rocker 23, thereby causing the button 27 to press against the spring 89 and actuate circuit controlling contacts thereon and on the springs l9.' When the handset is removed from the cradle, the spring 89 causes the restora tion of the plunger in the cradle to its normal position.

An insulating closure member 29 is seated upon the flange l3 between the tines l2 and is secured to the flange by a plurality of screws, at which extend through the flange andare threaded into metallic inserts 3| embedded in the flange. The 5 serts 33 therein.

closure member 29 is provided with a centrally apertured hub 32 fitted in the central aperture which extends slidably through the bearing inserts 33.

An L-shaped extension 36 is secured to the lower end of the spindle 35 by a screw 31 and engages the projecting tongue 28 on the stamping The plunger rocks the stamping 23 to actuate the contact assembly in response to the association and disassociation of a hand telephone in the cradle of the desk stand.

A base is hinged to the base portion ii] of the desk stand and includes a metallic plate 38 which is covered with a sheet 39 of felt or the like. Each of the hinges connecting the base to the desk stand includes an L-shaped bracket iil secured to thecasing by screws'dl, a bracket 42 secured to the plate 38 by rivets 43 and a con-' necting arm 44. Each of the arms 44 is loosely secured at one end toa corresponding one of the brackets and is provided with a' slot 15 through which a threaded guide pin 36 secured to thebracket 52 extends. This construction allows the base to be removed clear of the casing and expedites the repair and adjustment of. the substation apparatus mounted on the base.

1 As shown more clearly in Fig. 3, the substation apparatus includes a ringer ll, a condenser so and an induction coil 49. I The condenser 58 is positioned on the plate 38' by a flanged strap which is secured to the plate by screws 5% threaded in the sockets 52 on the plate. The induction coil 59 is secured to the plate 38 by screws 53 which are threaded into sockets 5 1 on the plate.

A clamp member is secured to the plate 38 and has a pair of hookarms55 engaging the magnet 56 of the ringer 4i and together with a tab 5? holds the ringer assembly to the plate 33. An

insulating block 58 is secured to the plate 38 by screws 59 and carries a plurality of'terminals 60 to which the substation apparatus may be connected. p

The desk stand may be used on either manual or automatic systems. In the latter case, a dialing mechanism 8| is mounted on the front wall of the pedestal H. An electrical filter 62 may 'be associated with the dialing mechanismil to prevent interference with nearby radio receiving apparatus when the dialing mechanism is operated.

What is claimed is:

1. A mounting for a hand telephone, comprising a casing having a cradle for receiving a portion of the hand telephone, a plunger member disposed in said cradle and having a portion extending into said casing, and a unitary assembly within said casing including a supporting member detachably secured to an inner wall of said casing and having spaced parallel arms, circuit controlling members mounted on said supporting member, and a rocker member pivotally mounted between said parallel arms, said rocker member having an integral extension engaging oneof said circuit controlling members, and having another-integral extension engaged by said extending portion of said plunger, said circuit controlling members being resilient and constituting the sole means for rotating said rocker member whereby said plunger is raised when said hand telephone is removed from said cradle.

2-. A mounting for a hand telephone, comprising a hollow casing having a cradle for receivinga portion of the hand telephone, a plunger having a portion in said cradle and a spindle extending into said casing, and a unitary assembly within said casing including 'a single piece support having supporting flanges, a pair of spaced parallel arms, and a third arm between said parallel arms, means engaging said supporting flanges for detachably securing said support to said casing, resilient contact members mounted on said third arm and extending at substantially right angles to the direction ofmotion of said spindle, a shaft extending between said parallel arms, and a bracket member rockably mounted on said shaft, said bracket member having an integral arm engaging one of said contact members and another integral'arm'engaging said spindle, and said contact member constituting the sole means for rotating said rocker member whereby said plunger is raised when said hand telephone is removed from said cradle.

DOUGLAS H. KING. 

